U.S. patent number 9,370,036 [Application Number 14/445,540] was granted by the patent office on 2016-06-14 for message transmitting method and device.
This patent grant is currently assigned to Huawei Technologies Co., Ltd.. The grantee listed for this patent is Huawei Technologies Co., Ltd.. Invention is credited to Xiuli Yang, Yi Yu, Xiaoxiao Zheng.
United States Patent |
9,370,036 |
Yang , et al. |
June 14, 2016 |
Message transmitting method and device
Abstract
Embodiments of the present invention relate to the field of
communications, and provide a message transmitting method and
device. The method includes: transmitting, by a user equipment UE,
a radio resource control request to a base station, where the UE is
in an enhanced uplink cell forward access channel CELL_FACH state
and a system information block SIB5 includes an uplink interference
value; when no radio resource control response message is received
from the base station within a preset time and it is determined
that the current number of times the radio resource control request
is transmitted is smaller than a preset maximum number of
transmissions, read an SIB7 periodically and obtain the uplink
interference value; when determining, according to the uplink
interference value, to transmit the radio resource control request
message to the base station, transmit the radio resource control
request message to the base station again.
Inventors: |
Yang; Xiuli (Shanghai,
CN), Yu; Yi (Shanghai, CN), Zheng;
Xiaoxiao (Shanghai, CN) |
Applicant: |
Name |
City |
State |
Country |
Type |
Huawei Technologies Co., Ltd. |
Shenzhen, Guangdong |
N/A |
CN |
|
|
Assignee: |
Huawei Technologies Co., Ltd.
(Shenzhen, CN)
|
Family
ID: |
52428127 |
Appl.
No.: |
14/445,540 |
Filed: |
July 29, 2014 |
Prior Publication Data
|
|
|
|
Document
Identifier |
Publication Date |
|
US 20150038152 A1 |
Feb 5, 2015 |
|
Foreign Application Priority Data
|
|
|
|
|
Jul 31, 2013 [CN] |
|
|
2013 1 0328602 |
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H04W
76/18 (20180201); H04W 52/146 (20130101); H04W
52/243 (20130101) |
Current International
Class: |
H04W
76/02 (20090101); H04W 52/24 (20090101); H04W
52/14 (20090101) |
References Cited
[Referenced By]
U.S. Patent Documents
Other References
3rd Generation Partnership Project; Technical Specification Group
Radio Access Network; Enhanced uplink; Overall description; Stage 2
(Release 11), 3GPP TS 25.319 v11.6.0, Dec. 2012, 87 pages. cited by
applicant .
3rd Generation Partnership Project; Technical Specification Group
Radio Access Network; Radio Resource Control (RRC); Protocol
specification (Release 11), 3GPP TS 25.331 v11.6.0, Jun. 2013, 2084
pages. cited by applicant.
|
Primary Examiner: Mapa; Michael
Assistant Examiner: Chang; Martin
Claims
What is claimed is:
1. A message transmitting method, comprising: transmitting, by a
user equipment (UE), a radio resource control request message a
first time to a base station, wherein the UE is in an enhanced
uplink cell forward access channel CELL_FACH state and a system
information block SIB5 comprises an uplink interference value used
in transmitting the radio resource control request message the
first time; when no radio resource control response message is
received from the base station within a preset time and it is
determined that the current number of times the radio resource
control request message is transmitted is smaller than a preset
maximum number of transmissions, reading a system information block
SIB7 periodically and obtaining an updated uplink interference
value, wherein the SIB7 is transmitted by the base station to the
UE; and transmitting the radio resource control request message a
subsequent time to the base station again according to the updated
uplink interference value.
2. The method according to claim 1, wherein, after transmitting the
radio resource control request message a subsequent time to the
base station again, the method further comprises: after receiving a
radio resource control response from the base station, stopping
reading the SIB7 periodically.
3. The method according to claim 1, wherein transmitting, by a UE,
a radio resource control request message to a base station
comprises: transmitting, by the UE, a radio resource control (RRC),
connection establishment request message to the base station; when
no RRC response message is received from the base station within a
preset time and it is determined that the current number of times
the RRC connection request message is transmitted is smaller than a
preset maximum number of transmissions, reading the SIB7
periodically and obtaining the updated uplink interference value;
and transmitting the RRC connection establishment request message
to the base station again according to the updated uplink
interference value.
4. The method according to claim 3, wherein after the transmitting
the RRC connection establishment request message to the base
station again, the method further comprises: after receiving an RRC
connection establishment response message from the base station,
transmitting an RRC connection establishment complete message to
the base station; after transmitting the RRC connection
establishment complete message to the base station, transmitting a
cell change request message to the base station; when no cell
change response message is received from the base station within a
preset time and it is determined that the current number of times
the cell change request message is transmitted is smaller than a
preset maximum number of transmissions, reading the SIB7
periodically and obtaining the updated uplink interference value;
and transmitting the cell change request message to the base
station again according to the updated uplink interference
value.
5. The method according to claim 2, wherein transmitting, by a UE,
a radio resource control request message to a base station
comprises: transmitting, by the UE, a radio resource control (RRC)
connection establishment request message to the base station; when
no RRC response message is received from the base station within a
preset time and it is determined that the current number of times
the RRC connection request message is transmitted is smaller than a
preset maximum number of transmissions, reading the SIB7
periodically and obtaining the updated uplink interference value;
and transmitting the RRC connection establishment request message
to the base station again according to the updated uplink
interference value.
6. The method according to claim 5, wherein after transmitting the
RRC connection establishment request message to the base station
again, the method further comprises: after receiving an RRC
connection establishment response message from the base station,
transmitting an RRC connection establishment complete message to
the base station; after transmitting the RRC connection
establishment complete message to the base station, transmitting a
cell change request message to the base station; when no cell
change response message is received from the base station within a
preset time and it is determined that the current number of times
the cell change request message is transmitted is smaller than a
preset maximum number of transmissions, reading the SIB7
periodically and obtaining the updated uplink interference value;
and transmitting the cell change request message to the base
station again according to the updated interference value.
7. The method according to claim 1, wherein transmitting, by a UE,
a radio resource control request message to a base station
comprises: transmitting, by the UE, a cell change request message
to the base station; when no cell change response message is
received from the base station within a preset time and it is
determined that the current number of times the cell change request
message is transmitted is smaller than a preset maximum number of
transmissions, reading the SIB7 periodically and obtaining the
updated uplink interference value; and transmitting the cell change
request message to the base station again according to the updated
uplink interference value.
8. The method according to claim 2, wherein transmitting, by a UE,
a radio resource control request message to a base station
comprises: transmitting, by the UE, a cell change request message
to the base station; when no cell change response message is
received from the base station within a preset time and it is
determined that the current number of times the cell change request
message is transmitted is smaller than a preset maximum number of
transmissions, reading the SIB7 periodically and obtaining the
updated uplink interference value; and transmitting the cell change
request message to the base station again according to the updated
uplink interference value.
9. A user equipment (UE), comprising: a transmitting unit,
configured to transmit a radio resource control request message a
first time to a base station, wherein the UE is in an enhanced
uplink cell forward access channel CELL_FACH state and a system
information block SIB5 comprises an uplink interference value used
in transmitting the radio resource control request message the
first time; and a reading unit, configured to: when no radio
resource control response message is received from the base station
within a preset time and it is determined that the current number
of times the radio resource control request message is transmitted
is smaller than a preset maximum number of transmissions, read a
system information block SIB7 periodically and obtain an updated
uplink interference value, wherein the SIB7 is transmitted by the
base station to the UE, wherein: the transmitting unit is further
configured to: transmit the radio resource control request message
a subsequent time to the base station again according to the
updated uplink interference value.
10. The UE according to claim 9, wherein the reading unit is
further configured to stop reading the SIB7 periodically after a
radio resource control response message is received from the base
station.
11. The UE according to claim 9, wherein: the transmitting unit is
configured to transmit a radio resource control (RRC) connection
establishment request message to the base station; the reading unit
is configured to: when no RRC connection establishment response
message is received from the base station within a preset time and
it is determined that the current number of times the RRC
connection establishment request message is transmitted is smaller
than a preset maximum number of transmissions, read the SIB7
periodically and obtain the updated uplink interference value; and
the transmitting unit is configured to transmit the RRC connection
establishment request message to the base station again according
to the updated uplink interference value.
12. The UE according to claim 11, wherein: the transmitting unit is
further configured to transmit an RRC connection establishment
complete message to the base station after an RRC connection
establishment response message is received from the base station;
the transmitting unit is further configured to: after transmitting
the RRC connection establishment complete message to the base
station, transmit a cell change request message to the base
station; the reading unit is further configured to: when no cell
change response message is received from the base station within a
preset time and it is determined that the current number of times
the cell change request message is transmitted is smaller than a
preset maximum number of transmissions, read the SIB7 periodically
and obtain the updated uplink interference value; and the
transmitting unit is further configured to transmit the cell change
request message to the base station again according to the updated
uplink interference value.
13. The UE according to claim 10, wherein: the transmitting unit is
configured to transmit a radio resource control (RRC) connection
establishment request message to the base station; the reading unit
is configured to: when no RRC connection establishment response
message is received from the base station within a preset time and
it is determined that the current number of times the RRC
connection establishment request message is transmitted is smaller
than a preset maximum number of transmissions, read the SIB7
periodically and obtain the updated uplink interference value; and
the transmitting unit is configured to transmit the RRC connection
establishment request message to the base station again according
to the updated uplink interference value.
14. The UE according to claim 13, wherein: the transmitting unit is
further configured to transmit an RRC connection establishment
complete message to the base station after an RRC connection
establishment response message is received from the base station;
the transmitting unit is further configured to: after transmitting
the RRC connection establishment complete message to the base
station, transmit a cell change request message to the base
station; the reading unit is further configured to: when no cell
change response message is received from the base station within a
preset time and it is determined that the current number of times
the cell change request message is transmitted is smaller than a
preset maximum number of transmissions, read the SIB7 periodically
and obtain the updated uplink interference value; and the
transmitting unit is further configured to transmit the cell change
request message to the base station again according to the updated
uplink interference value.
15. The UE according to claim 9, wherein: the transmitting unit is
configured to transmit a cell change request message to the base
station; the reading unit is configured to: when no cell change
response message is received from the base station within a preset
time and it is determined that the current number of times the cell
change request message is transmitted is smaller than a preset
maximum number of transmissions, read the SIB7 periodically and
obtain the updated uplink interference value; and the transmitting
unit is configured to transmit the cell change request message to
the base station again according to the updated uplink interference
value.
16. The UE according to claim 10, wherein: the transmitting unit is
configured to transmit a cell change request message to the base
station; the reading unit is configured to: when no cell change
response message is received from the base station within a preset
time and it is determined that the current number of times the cell
change request message is transmitted is smaller than a preset
maximum number of transmissions, read the SIB7 periodically and
obtain the updated uplink interference value; and the transmitting
unit is configured to transmit the cell change request message to
the base station again according to the updated uplink interference
value.
Description
CROSS-REFERENCE TO RELATED APPLICATION
This application claims priority to Chinese Patent Application No.
201310328602.5, filed on Jul. 31, 2013, which is hereby
incorporated by reference in its entirety.
TECHNICAL FIELD
The present invention relates to the field of communications, and
in particular, to a message transmitting method and device.
BACKGROUND
In the prior art, for a UE (User Equipment, user equipment) on an
enhanced uplink CELL_FACH (Cell Forward Access Channel, cell
forward access channel), in a process of initiating an RRC (Radio
Resource Control, Radio Resource Control) connection establishment
with a base station, before the UE transmits an RRC connection
establishment request message to the base station, the UE needs to
read an uplink interference value included in an SIB (System
Information Block, system information block) 5, and transmits an
RRC connection establishment request message to the base station
according to the uplink interference value; when to the UE does not
receive an RRC connection establishment response from the base
station within a preset time, the UE transmits the RRC connection
establishment request message to the base station again until a
preset maximum number of transmissions is reached.
It should be noted that the uplink interference value changes with
a current communication environment. When the UE transmits the RRC
connection establishment request message to the base station again,
because the UE no longer reads the SIB5, the UE transmits the RRC
connection establishment request message to the base station again
according to the uplink interference value in the SIB5 that is read
before the UE transmits for a first time the RRC connection
establishment request message to the base station. However, because
the uplink interference value may be greatly changed, a transmit
power of the UE may be relatively low if the UE transmits the RRC
connection establishment request message to the base station
according to the uplink interference value in the SIB5 that is read
before the UE transmits for a first time the RRC connection
establishment request message to the base station, which causes a
failure in transmitting the RRC connection establishment request
message and further causes a failure of RRC establishment by the
UE.
SUMMARY
Embodiments of the present invention provide a message transmitting
method and device to ensure that a UE accesses a base station
successfully when uplink interference is strong.
In a first aspect, a message transmitting method is provided,
including:
transmitting, by a user equipment UE, a radio resource control
request message to a base station, where the UE is in an enhanced
uplink cell forward access channel CELL_FACH state and a system
information block SIB5 includes an uplink interference value;
when no radio resource control response message is received from
the base station within a preset time and it is determined that the
current number of times the radio resource control request message
is transmitted is smaller than a preset maximum number of
transmissions, reading an SIB7 periodically and obtaining the
uplink interference value, where the SIB7 is transmitted by the
base station to the UE; and
when determining, according to the uplink interference value, to
transmit the radio resource control request message to the base
station, transmitting the radio resource control request message to
the base station again.
In a first possible implementation of the first aspect, after the
transmitting the radio resource control request message to the base
station again, the method further includes: after receiving a radio
resource control response from the base station, stopping reading
the SIB7 periodically.
With reference to the first aspect or the first possible
implementation, in a second possible implementation, the
transmitting, by a UE, a radio resource control request message to
a base station includes:
transmitting, by the UE, a radio resource control RRC connection
establishment request message to the base station;
the reading, when no radio resource control response message is
received from the base station within a preset time and it is
determined that the current number of times the radio resource
control request message is transmitted is smaller than a preset
maximum number of transmissions, an SIB7 periodically and obtaining
the uplink interference value includes:
when no RRC connection establishment response message is received
from the base station within a preset time and it is determined
that the current number of times the RRC connection establishment
request message is transmitted is smaller than a preset maximum
number of transmissions, reading the SIB7 periodically and
obtaining the uplink interference value; and
the transmitting, when determining, according to the uplink
interference value, to transmit the radio resource control request
message to the base station, the radio resource control request
message to the base station again includes:
when determining, according to the uplink interference value, to
transmit the RRC connection establishment request message to the
base station, transmitting the RRC connection establishment request
message to the base station again.
With reference to the second possible implementation, in a third
possible implementation, after the transmitting the RRC connection
establishment request message to the base station again, the method
further includes:
after receiving an RRC connection establishment response message
from the base station, transmitting an RRC connection establishment
complete message to the base station;
after transmitting the RRC connection establishment complete
message to the base station, transmitting a cell change request
message to the base station;
when no cell change response message is received from the base
station within a preset time and it is determined that the current
number of times the cell change request message is transmitted is
smaller than a preset maximum number of transmissions, reading the
SIB7 periodically and obtaining the uplink interference value;
and
when determining, according to the uplink interference value, to
transmit the cell change request message to the base station,
transmitting the cell change request message to the base station
again.
With reference to the first aspect or the first possible
implementation, in a fourth possible implementation, the
transmitting, by a LIE, a radio resource control request message to
a base station includes:
transmitting, by the UE, a cell change request message to the base
station;
the reading, when no radio resource control response message is
received from the base station within a preset time and it is
determined that the current number of times the radio resource
control request message is transmitted is smaller than a preset
maximum number of transmissions, an SIB7 periodically and obtaining
the uplink interference value includes:
when no cell change response message is received from the base
station within a preset time and it is determined that the current
number of times the cell change request message is transmitted is
smaller than a preset maximum number of transmissions, reading the
SIB7 periodically and obtaining the uplink interference value;
and
the transmitting, according to the uplink interference value, the
radio resource control request message to the base station again
includes:
when determining, according to the uplink interference value, to
transmit the cell change request message to the base station,
transmitting the cell change request message to the base station
again.
In a second aspect, a UE is provided, including:
a transmitting unit, configured to transmit a radio resource
control request message to a base station, where the UE is in an
enhanced uplink cell forward access channel CELL_FACH state and a
system information block SIB5 includes an uplink interference
value; and
a reading unit, configured to: when no radio resource control
response message is received from the base station within a preset
time and it is determined that the current number of times the
radio resource control request message is transmitted is smaller
than a preset maximum number of transmissions, read a system
information block SIB7 periodically and obtain the uplink
interference value, where the SIB7 is transmitted by the base
station to the UE, where:
the transmitting unit is further configured to: when determining,
according to the uplink interference value obtained by the reading
unit, to transmit the radio resource control request message to the
base station, transmit the radio resource control request message
to the base station again.
In a first possible implementation of the second aspect, the
reading unit is further configured to stop reading the SIB7
periodically after a radio resource control response message is
received from the base station.
With reference to the second aspect or the first possible
implementation, in a second possible implementation, the
transmitting unit is specifically configured to transmit an RRC
connection establishment request message to the base station;
the reading unit is specifically configured to: when no RRC
connection establishment response message is received from the base
station within a preset time and it is determined that the current
number of times the RRC connection establishment request message is
transmitted is smaller than a preset maximum number of
transmissions, read the SIB7 periodically and obtain the uplink
interference value; and
the transmitting unit is specifically configured to: when
determining, according to the uplink interference value obtained by
the reading unit, to transmit the RRC connection establishment
request message to the base station, transmit the RRC connection
establishment request message to the base station again.
With reference to the second possible implementation, in a third
possible implementation, the transmitting unit is further
configured to transmit an RRC connection establishment complete
message to the base station after an RRC connection establishment
response message is received from the base station;
the transmitting unit is further configured to: after transmitting
the RRC connection establishment complete message to the base
station, transmit a cell change request message to the base
station;
the reading unit is further configured to: when no cell change
response message is received from the base station within a preset
time and it is determined that the current number of times the cell
change request message is transmitted is smaller than a preset
maximum number of transmissions, read the SIB7 periodically and
obtain the uplink interference value; and
the transmitting unit is further configured to: when determining,
according to the uplink interference value obtained by the reading
unit, to transmit the cell change request message to the base
station, transmit the cell change request message to the base
station again.
With reference to the second aspect or the first possible
implementation, in a fourth possible implementation, the
transmitting unit is specifically configured to transmit a cell
change request message to the base station;
the reading unit is specifically configured to: when no cell change
response message is received from the base station within a preset
time and it is determined that the current number of times the cell
change request message is transmitted is smaller than a preset
maximum number of transmissions, read the SIB7 periodically and
obtain the uplink interference value; and
the transmitting unit is specifically configured to: when
determining, according to the uplink interference value obtained by
the reading unit, to transmit the cell change request message to
the base station, transmit the cell change request message to the
base station again.
In the foregoing solutions, when a UE transmit a radio resource
control request message to a base station and receives no radio
resource control response message from the base station within a
preset time, the UE reads an uplink interference value in an SIB7,
and transmits, according to the uplink interference value, the
radio resource control request message to the base station again.
In this way, when the UE transmits a radio resource control request
message to the base station again, the UE transmits, according to
the uplink interference value in the SIB7, the radio resource
control request message to the base station again, so that when
there is a great change to the uplink interference value, the UE
can transmit the radio resource control request message to the base
station again according to a changed uplink interference value and
a sufficient transmit power can be provided when the UE transmits
the radio resource control request message again, thereby ensuring
that the UE accesses the base station successfully when uplink
interference is strong.
BRIEF DESCRIPTION OF DRAWINGS
To illustrate the technical solutions in the embodiments of the
present invention more clearly, the following briefly introduces
the accompanying drawings required for describing the embodiments.
Apparently, the accompanying drawings in the following description
show merely some embodiments of the present invention, and a person
of ordinary skill in the art may still derive other drawings from
these accompanying drawings without creative efforts.
FIG. 1 is a schematic diagram of a message transmitting method
according to an embodiment of the present invention;
FIG. 2 is a schematic flowchart of a message transmitting method
according to an embodiment of the present invention;
FIG. 3 is a schematic flowchart of another message transmitting
method according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a UE according to an
embodiment of the present invention; and
FIG. 5 is a schematic structural diagram of another UE according to
an embodiment of the present invention.
DESCRIPTION OF EMBODIMENTS
The following clearly describes the technical solutions in the
embodiments of the present invention with reference to the
accompanying drawings in the embodiments of the present invention.
Apparently, the described embodiments are merely a part rather than
all of the embodiments of the present invention. All other
embodiments obtained by a person of ordinary skill in the art based
on the embodiments of the present invention without creative
efforts shall fall within the protection scope of the present
invention.
In the embodiments of the present invention, a base station may be
a radio network subsystem (Radio Network Subsystem, RNS) on a 3G
network.
An embodiment of the present invention provides a message
transmitting method. As shown in FIG. 1, the method may be executed
by a UE, and the method includes:
S101. A UE transmits a radio resource control request message to a
base station.
The UE is in an enhanced uplink CELL_FACH state, and an SIB5
includes an uplink interference value. For example, when a
READY_FOR_COMMON_EDCH variable of the UE is TRUE, it indicates that
the UE is in an enhanced uplink CELL_FACH state.
Optionally, if the UE transmits a radio resource control request
message to the base station for a first time, the UE reads an
uplink interference value in the SIB5 before transmitting the radio
resource control request message, and transmits the radio resource
control request message according to the uplink interference
value.
S102. When no radio resource control response message is received
from the base station within a preset time and it is determined
that the current number of times the radio resource control request
message is transmitted is smaller than a preset maximum number of
transmissions, the UE reads an SIB7 periodically and obtains the
uplink interference value.
The SIB7 is transmitted by the base station to the UE.
Specifically, because the uplink interference value changes with a
communication environment, the base station may transmit the SIB7
to the UE periodically according to a preset interval to inform the
UE of a changed uplink interference value; and the UE obtains a
reading interval, and reads the uplink interference value in the
SIB7 according to the reading interval.
In one possible implementation of the present invention, the UE may
obtain the reading interval according to scheduling information in
an MIB (Master Information Block, master information block) or an
SB (Scheduling block, scheduling block) 1 or an SB2.
Exemplarily, if the UE does not receive a radio resource control
response message within a preset time and determines that the
current number of times the radio resource control request message
is transmitted is smaller than a preset maximum number of
transmissions (that is, the UE needs to transmit the radio resource
control request message to the base station again), the UE reads a
first uplink interference value in the SIB7, reads a second uplink
interference value in the SIB7 after one reading interval, and
further reads a third uplink interference value in the SIB7 after
another reading interval. If, at this time, the UE determines,
according to the third uplink interference value, to transmit the
radio resource control request message to the base station, the UE
transmits the radio resource control request message to the base
station again.
S103. When determining, according to the uplink interference value,
to transmit the radio resource control request message to the base
station, the UE transmits the radio resource control request
message to the base station again.
Specifically, the UE determines a transmit power of the UE
according to the uplink interference value, and transmits a random
access request message to the base station according to the
transmit power; and after receiving a random access response
message, the UE determines to transmit the radio resource control
request message to the base station.
Further, after receiving a radio resource control response message
from the base station, the UE stops reading the SIB7 periodically,
due to the following reasons: (1) the UE does not need to read the
SIB7 again, because the UE, after receiving the radio resource
control response message, does not need to transmit the radio
resource control request message; (2) an additional power of the UE
needs to be consumed when the UE reads the uplink interference
value in the SIB7, and in this embodiment of the present invention,
the UE may stop reading the uplink interference value in the SIB7
to reduce power consumption of the UE.
Optionally, this embodiment of the present invention may be applied
to an RRC connection establishment procedure. In this case, the
foregoing radio resource control request message may be an RRC
connection establishment request message, and the corresponding
radio resource control response message may be an RRC connection
establishment response message.
The UE transmits an RRC connection establishment request message to
the base station; when no RRC connection establishment response
message is received from the base station within a preset time and
it is determined that the current number of times the RRC
connection request message is transmitted is smaller than a preset
maximum number of transmissions, the UE reads the SIB7 periodically
and obtains an uplink interference value; and when determining,
according to the uplink interference value, to transmit an RRC
connection establishment request message to the base station, the
UE transmits the RRC connection establishment request message to
the base station again.
Specifically, after the UE transmits the RRC connection
establishment request message, a timer T300 is started, where the
T300 defines how long the UE waits for receiving an RRC connection
establishment response message after the UE transmits the RRC
connection establishment request message; if the UE still does not
receive the RRC connection establishment response message after a
time period indicated by the T300 expires and a V300 is smaller
than an N300, the UE reads the SIB7 periodically and obtains an
uplink interference value; and if determining, according to the
uplink interference value, to transmit an RRC connection
establishment request message to the base station, the UE transmits
the RRC connection establishment request message to the base
station again, where the N300 is a preset maximum number of
transmissions of the RRC connection establishment request message
by the UE and the V300 is a current number of times the RRC
connection establishment request message is transmitted by the
UE.
Optionally, this embodiment of the present invention may be applied
to a cell change procedure. In this case, the foregoing radio
resource control request message may be a cell change request
message, and the corresponding radio resource control response
message may be a cell change response message.
The UE transmits a cell change request message to the base station;
and when no cell change response message is received from the base
station within a preset time and it is determined that the current
number of times the cell change request message is transmitted is
smaller than a preset maximum number of transmissions, the UE reads
the SIB7 periodically and obtains the uplink interference value;
and when determining, according to the uplink interference value,
to transmit the cell change request message to the base station,
the UE transmits the cell change request message to the base
station again.
Specifically, after the UE transmits the cell change request
message, a timer T302 is started, where the T302 defines how long
the UE waits for receiving a cell change response message after the
UE transmits the cell change request message; if the UE still does
not receive the cell change response message after a time period
indicated by the T302 expires and a V302 is smaller than an N302,
the UE reads the SIB7 periodically and obtains the uplink
interference value, and transmits, according to the uplink
interference value, the cell change request message to the base
station again, where the N302 is a preset maximum number of
transmissions of the cell change request message by the UE and the
V302 is the current number of times the cell change request message
is transmitted by the UE.
It should be noted that the foregoing cell change procedure may be
implemented after the foregoing RRC connection establishment
procedure is completed. Specifically, after the UE receives an RRC
connection establishment response message from the base station,
the UE transmits an RRC connection establishment complete message
to the base station; and if a cell change occurs after the UE
transmits the RRC connection establishment complete message to the
base station, the UE transmits a cell change request message to the
base station; when no cell change response message is received from
the base station within a preset time and it is determined that the
current number of times the cell change request message is
transmitted is smaller than a preset maximum number of
transmissions, the UE reads the SIB7 and obtains the uplink
interference value; when determining, according to the uplink
interference value, to transmit the cell change request message to
the base station, the UE transmits the cell change request message
to the base station again.
In the foregoing solution executed by a UE, when the UE transmits a
radio resource control request message to the base station again,
the UE transmits the radio resource control request message to the
base station again according to an uplink interference value in an
SIB7. In this way, when there is a great change to the uplink
interference value, the UE can transmit the radio resource control
request message to the base station again according to a changed
uplink interference value, so that a sufficient transmit power is
provided when the UE transmits the radio resource control request
message again, thereby ensuring that the UE accesses the base
station successfully when uplink interference is strong.
An embodiment of the present invention provides a message
transmitting method. As shown in FIG. 2, this embodiment of the
present invention is applied in an RRC connection establishment
procedure and is applied to a UE that is in an enhanced uplink
CELL_FACH state, and the method includes:
S201. When a UE determines to establish an RRC connection with a
base station, the UE transmits an RRC connection establishment
request message to the base station.
After the UE transmits the RRC connection establishment request
message to the base station, a T300 is started, where the T300
defines how long the UE waits for receiving an RRC connection
establishment response message after the UE transmits the RRC
connection establishment request message.
It should be noted that, before the UE transmits the RRC connection
establishment request message, the UE reads an uplink interference
value in an SIB5, and transmits the RRC connection establishment
request message according to the uplink interference value.
S202. If the UE still does not receive an RRC connection
establishment response message when a time period indicated by the
T300 expires and determines that a V300 is smaller than an N300,
the UE reads an SIB7 periodically and obtains an uplink
interference value.
The N300 is a preset maximum number of transmissions of the RRC
connection establishment request message by the UE, and the V300 is
the current number of times the RRC connection establishment
request message is transmitted by the UE.
Specifically, because the uplink interference value changes with a
communication environment, the base station may transmit the SIB7
to the UE periodically according to a preset interval to inform the
UE of a changed uplink interference value; and the UE obtains a
reading interval, and reads the uplink interference value in the
SIB7 according to the reading interval.
In one possible implementation of the present invention, the UE may
obtain the reading interval according to scheduling information in
an MIB or an SB1 or an SB2.
Exemplarily, if the UE does not receive an RRC connection
establishment response message within a preset time and determines
that the current number of times the RRC connection establishment
request message is transmitted is smaller than a preset maximum
number of transmissions (that is, the UE needs to transmit the RRC
request message to the base station again), the UE reads a first
uplink interference value in the SIB7, reads a second uplink
interference value in the SIB7 after one reading interval, and
further reads a third uplink interference value in the SIB7 after
another reading interval. If, at this time, the UE determines,
according to the third uplink interference value, to transmit the
RRC request message to the base station, the UE transmits the RRC
connection establishment request message to the base station
again.
S203. When determining, according to the uplink interference value,
to transmit the RRC connection establishment request to the base
station, the UE transmits the RRC connection establishment request
message to the base station again.
Specifically, the UE determines a transmit power of the UE
according to the uplink interference value, and transmits a random
access request message to the base station according to the
transmit power; and after receiving a random access response
message, the UE determines to transmit the RRC connection
establishment request message to the base station.
S204. After receiving the RRC connection establishment request
message, the base station transmits an RRC connection establishment
response message to the UE.
S205. After receiving the RRC connection establishment response
message, the UE stops reading the SIB7 periodically.
Because the UE, after receiving the RRC connection establishment
response message, does not need to transmit the RRC request message
again, the UE does not need to read the SIB7 again. In this
embodiment of the present invention, the UE may stop reading the
uplink interference value in the SIB7 to reduce power consumption
of the UE, considering that an additional power of the UE needs to
be consumed when the UE reads the uplink interference value in the
SIB7.
S206. The UE transmits an RRC connection establishment complete
message to the base station, so as to complete the RRC connection
establishment.
It should be noted that, if the UE still does not receive an RRC
connection establishment response within a preset time after the UE
transmits the RRC connection establishment request message for a
second time and the V300 is still smaller than the N300, the UE
determines, according to a currently read uplink interference value
in the SIB7, to transmit an RRC connection establishment request
message to the base station; then, the UE transmits the RRC
connection establishment request message for a third time; if an
RRC connection establishment response message is still not
received, the UE continues reading the SIB7 periodically and
transmits the RRC connection establishment request message to the
base station according to a read uplink interference value until an
RRC connection establishment response message is received from the
base station or until the V300 is greater than or equal to the
N300. For details about the specific implementation, reference may
be made to the foregoing step S201 to step S203, and details are
not described herein again.
In this way, in an RRC connection establishment procedure, when a
UE transmits an RRC connection establishment request message to a
base station again, the UE transmits the RRC connection
establishment request message to the base station again according
to an uplink interference value in an SIB7. Therefore, when there
is a great change to the uplink interference value, the UE can
transmit the RRC connection establishment request message to the
base station again according to a changed uplink interference
value, so that a sufficient transmit power is provided when the UE
transmits the RRC request message again, thereby ensuring that the
UE establishes an RRC connection with the base station
successfully.
It should be noted that, for brief description, the foregoing
method embodiment is described as a combination of a series of
actions. However, a person skilled in the art should understand
that the present invention is not limited to the described order of
actions because some steps may be implemented in other orders or
concurrently according to the present invention. In addition, a
person skilled in the art should also understand that the
embodiments described in this specification are all exemplary
embodiments and the involved actions and modules are not
necessarily mandatory in the present invention.
An embodiment of the present invention provides a message
transmitting method. As shown in FIG. 3, this method embodiment of
the present invention is applied in a cell change procedure and is
applied to a UE that is in an enhanced uplink CELL_FACH state, and
the method includes:
S301. After establishing an RRC connection, a UE transmits a cell
change request message to a base station.
After the UE transmits the cell change request message to the base
station, a T302 is started, where the T302 defines how long the UE
waits for receiving a cell change response message after the UE
transmits the cell change request message.
It should be noted that, before the UE transmits the cell change
request message, the UE reads an uplink interference value in an
SIB5, and transmits the cell change request message according to
the uplink interference value.
In addition, for details about a procedure of establishing the
foregoing RRC connection, reference may be made to the RRC
connection establishment procedure shown in FIG. 2, and this
embodiment of the present invention is not intended to place a
limitation on the RRC connection establishment procedure.
S302. If the UE still does not receive a cell change response
message when a time period indicated by the T302 expires and
determines that a V302 is smaller than an N302, the UE reads an
SIB7 periodically and obtains an uplink interference value.
The N302 is a preset maximum number of transmissions of the cell
change request message by the UE, and the V302 is the current
number of times the cell change request message is transmitted by
the UE.
Specifically, because an uplink interference value changes with a
communication environment, the base station may transmit the SIB7
to the UE periodically according to a preset interval to inform the
UE of a changed uplink interference value; and the UE obtains a
reading interval, and reads the uplink interference value in the
SIB7 according to the reading interval.
In one possible implementation of the present invention, the UE may
obtain the reading interval according to scheduling information in
an MIB or an SB1 or an SB2.
Exemplarily, if the UE does not receive a cell change response
message within a preset time and determines that the current number
of times the cell change request message is transmitted is smaller
than a preset maximum number of transmissions (that is, the UE
needs to transmit the cell change request message to the base
station again), the UE reads a first uplink interference value in
the SIB7, reads a second uplink interference value in the SIB7
after one reading interval, and further reads a third uplink
interference value in the SIB7 after another reading interval. If,
at this time, the UE determines, according to the third uplink
interference value, to transmit the cell change request message to
the base station, the UE transmits the cell change request message
to the base station again.
S303. When determining, according to the uplink interference value,
to transmit the cell change request to the base station, the UE
transmits the cell change request message to the base station
again.
Specifically, the UE determines a transmit power of the UE
according to the uplink interference value, and transmits a random
access request message to the base station according to the
transmit power; and after receiving a random access response
message, the UE determines to transmit the cell change request
message to the base station.
S304. After receiving the cell change request message, the base
station transmits a cell change response message to the UE.
S305. After receiving the cell change response message, the UE
stops reading the uplink interference value in the SIB7
periodically.
Because the UE, after receiving the cell change response message,
does not need to transmit the cell change request message again,
the UE does not need to read the SIB7 again. In this embodiment of
the present invention, the UE may stop reading the uplink
interference value in the SIB7 to reduce power consumption of the
UE, considering that an additional power of the UE needs to be
consumed when the UE reads the uplink interference value in the
SIB7.
S306. The UE transmits a cell change complete message to the base
station, so as to complete the cell change.
It should be noted that, if the UE still does not receive a cell
change response message within a preset time after the UE transmits
the cell change request message for a second time and the V302 is
still smaller than the N302, the UE determines, according to the
currently read uplink interference value in the SIB7, to transmit a
cell change request message to the base station; then, the UE
transmits the cell change request message for a third time; if a
cell change response message is still not received, the UE
continues reading the SIB7 periodically and transmits a cell change
request message to the base station according to the read uplink
interference value until a cell change response message is received
from the base station or until the V302 is greater than or equal to
the N302. For details about the specific implementation, reference
may be made to the foregoing step S301 to step S303, and details
are not described herein again.
In this way, in a cell change procedure, when a UE transmits a cell
change request message to a base station again, the UE transmits
the cell change request message to the base station again according
to an uplink interference value in an SIB7. Therefore, when there
is a great change to the uplink interference value, the UE can
transmit the cell change request message to the base station again
according to a changed uplink interference value, so that a
sufficient transmit power is provided when the UE transmits the
cell change request message again, thereby ensuring that the UE
establishes an RRC connection with the base station
successfully.
It should be noted that, for brief description, the foregoing
method embodiment is described as a combination of a series of
actions. However, a person skilled in the art should understand
that the present invention is not limited to the described order of
actions because some steps may be implemented in other orders or
concurrently according to the present invention. In addition, a
person skilled in the art should also understand that the
embodiments described in the specification are all exemplary
embodiments and the involved actions and modules are not
necessarily mandatory in the present invention.
An embodiment of the present invention provides a UE 40. As shown
in FIG. 4, the UE 40 includes a transmitting unit 41 and a reading
unit 42.
The transmitting unit 41 is configured to transmit a radio resource
control request message to a base station.
The UE is in an enhanced uplink cell forward access channel
CELL_FACH state and a system information block SIB5 includes an
uplink interference value. For example, when a
READY_FOR_COMMON_EDCH variable of the UE is TRUE, it indicates that
the UE is in an enhanced uplink CELL_FACH state.
Optionally, if the UE transmits a radio resource control request
message to the base station for a first time, the UE reads an
uplink interference value in the SIB5 before transmitting the radio
resource control request message, and transmits the radio resource
control request message according to the uplink interference
value.
The reading unit 42 is configured to: when no radio resource
control response message is received from the base station within a
preset time and it is determined that the current number of times
the radio resource control request message is transmitted is
smaller than a preset maximum number of transmissions, read an SIB7
periodically and obtain the uplink interference value.
The SIB7 is transmitted by the base station to the UE.
Specifically, because an uplink interference value changes with a
communication environment, the base station may transmit the SIB7
to the UE periodically according to a preset interval to inform the
UE of a changed uplink interference value; and the UE obtains a
reading interval, and reads the uplink interference value in the
SIB7 according to the reading interval.
In one possible implementation of the present invention, the UE may
obtain the reading interval according to scheduling information in
an MIB (Master Information Block, master information block) or an
SB (Scheduling block, scheduling block) 1 or an SB2.
Exemplarily, if the UE does not receive a radio resource control
response message within a preset time and determines that the
current number of times the radio resource control request message
is transmitted is smaller than a preset maximum number of
transmissions (that is, the UE needs to transmit the radio resource
control request message to the base station again), the UE reads a
first uplink interference value in the SIB7, reads a second uplink
interference value in the SIB7 after one reading interval, and
further reads a third uplink interference value in the SIB7 after
another one reading interval. If, at this time, the UE determines,
according to the third uplink interference value, to transmit the
radio resource control request message to the base station, the UE
transmits the radio resource control request message to the base
station again.
The transmitting unit 41 is further configured to: when
determining, according to the uplink interference value obtained by
the reading unit 42, to transmit the radio resource control request
message to the base station, transmit the radio resource control
request message to the base station again.
Specifically, the UE determines a transmit power of the UE
according to the uplink interference value, and transmits a random
access request message to the base station according to the
transmit power; and after receiving a random access response
message, the UE determines to transmit the radio resource control
request message to the base station.
Further, the reading unit 42 is further configured to: after a
radio resource control response message is received from the base
station, stop reading the SIB7 periodically.
Because the UE, after receiving the radio resource control response
message, does not need to transmit the radio resource control
request message again, the UE does not need to read the SIB7 again.
In this embodiment of the present invention, the UE may stop
reading the uplink interference value in the SIB7 to reduce power
consumption of the UE, considering that an additional power of the
UE needs to be consumed when the UE reads the uplink interference
value in the SIB7.
Optionally, in an RRC connection establishment procedure, the
transmitting unit 41 is specifically configured to transmit an RRC
connection establishment request message to the base station;
the reading unit 42 is specifically configured to: when no RRC
connection establishment response message is received from the base
station within a preset time and it is determined that the current
number of times the RRC connection establishment request message is
transmitted is smaller than a preset maximum number of
transmissions, read the SIB7 periodically and obtain the uplink
interference value; and
the transmitting unit 41 is specifically configured to: when
determining, according to the uplink interference value obtained by
the reading unit 42, to transmit the RRC connection establishment
request message to the base station, transmit the RRC connection
establishment request message to the base station again.
Specifically, after the UE transmits the RRC connection
establishment request message, a T300 is started, where the T300
defines how long the UE waits for receiving an RRC connection
establishment response message after the UE transmits the RRC
connection establishment request message; if the UE still does not
receive an RRC connection establishment response message after a
time period indicated by the T300 expires and a V300 is smaller
than an N300, the UE reads the SIB7 periodically and obtains the
uplink interference value, and determines, according to the uplink
interference value, to transmit the RRC connection establishment
request message to the base station; and then, the UE transmits the
RRC connection establishment request message to the base station
again, where the N300 is a preset maximum number of transmissions
of the RRC connection establishment request message by the UE and
the V300 is a current number of times the RRC connection
establishment request message is transmitted by the UE.
Further, the transmitting unit 41 is further configured to: after
an RRC connection establishment response message is received from
the base station, transmit an RRC connection establishment complete
message to the base station;
the transmitting unit 41 is further configured to: after
transmitting the RRC connection establishment complete message to
the base station, transmit a cell change request message to the
base station;
the reading unit 42 is further configured to: when a cell change
response message is not received from the base station within a
preset time and it is determined that the current number of times
that the cell change request message is transmitted is smaller than
a preset maximum number of transmissions, read the SIB7
periodically and obtain the uplink interference value; and
the transmitting unit 41 is further configured to: when
determining, according to the uplink interference value obtained by
the reading unit 42, to transmit the cell change request message to
the base station, transmit the cell change request message to the
base station again.
Optionally, in a cell change procedure, the transmitting unit 41 is
specifically configured to transmit a cell change request message
to the base station;
the reading unit 42 is specifically configured to: when no cell
change response message is received from the base station within a
preset time and it is determined that the current number of times
the cell change request message is transmitted is smaller than a
preset maximum number of transmissions, read the SIB7 periodically
and obtain the uplink interference value; and
the transmitting unit 41 is specifically configured to: when
determining, according to the uplink interference value obtained by
the reading unit 42, to transmit the cell change request message to
the base station, transmit the cell change request message to the
base station again.
Specifically, after the UE transmits the cell change request
message, a T302 is started, where the T302 defines how long the UE
waits for receiving a cell change response message after the UE
transmits the cell change request message; if the UE still does not
receive a cell change response message after a time period
indicated by the T302 expires and a V302 is smaller than an N302,
the UE reads the uplink interference value in the SIB7, and
transmits, according to the uplink interference value, the cell
change request message to the base station again, where the N302 is
a preset maximum, number of transmissions of the cell change
request message by the UE and the V302 is the current number of
times the cell change request message is transmitted by the UE.
When the foregoing UE transmits a radio resource control request
message to a base station again, the UE transmits the radio
resource control request message to the base station again
according to an uplink interference value in an SIB7. In this way,
when there is a great change to the uplink interference value, the
UE can transmit the radio resource control request message to the
base station again according to a changed uplink interference
value, so that a sufficient transmit power is provided when the UE
transmits the radio resource control request message again, thereby
ensuring that the UE accesses the base station successfully when
uplink interference is strong.
It may be clearly understood by a person skilled in the art that,
for the purpose of convenient and brief description, for details
about a specific working process and description of the foregoing
UE, reference may be made to a corresponding process in the
foregoing method embodiments, and details are not described herein
again.
An embodiment of the present invention provides a UE 50. As shown
in FIG. 5, the UE 50 includes a processor (processor) 51, a
communications interface (Communications Interface) 52, a memory
(memory) 53, and a communications bus 54, where the processor 51,
the communications interface 52, and the memory 53 communicates
with one other through the communications bus 54.
The processor 51 may be a central processing unit CPU, or an
application specific integrated circuit ASIC (Application Specific
Integrated Circuit), or be configured as one or multiple integrated
circuits in this embodiment of the present invention.
The memory 53 is configured to store program code, where the
program code includes computer operation instructions. The memory
53 may include a high speed RAM memory, and may also include a
non-volatile memory (non-volatile memory), for example, at least
one magnetic disk memory.
The communications interface 52 is configured to implement
communicative connections between these apparatuses.
The processor 51 executes the program code and is configured to:
transmit a radio resource control request message to a base
station, where the UE is in an enhanced uplink cell forward access
channel CELL_FACH state and a system information block SIB5
includes an uplink interference value; when no radio resource
control response message is received from the base station within a
preset time and it is determined that the current number of times
the radio resource control request is transmitted is smaller than a
preset maximum number of transmissions, read an SIB7 periodically
and obtain the uplink interference value; and when determining,
according to the uplink interference value, to transmit the radio
resource control request message to the base station, transmit the
radio resource control request message to the base station
again.
The SIB7 is transmitted by the base station to the UE.
Optionally, the processor 51 is further configured to: after a
radio resource control response message is received from the base
station, stop reading the SIB7 periodically.
The processor is specifically configured to transmit the radio
resource control request message to the base station again
according to a currently read uplink interference value.
Optionally, the processor 51 is specifically configured to: when no
RRC connection establishment response message is received from the
base station within a preset time and it is determined that the
current number of times the RRC connection establishment request
message is transmitted is smaller than a preset maximum number of
transmissions, read the SIB7 periodically and obtain the uplink
interference value, and when determining, according to the uplink
interference value, to transmit the RRC connection establishment
request message to the base station, transmit the RRC connection
establishment request message to the base station again.
Optionally, the processor 51 is further configured to: after
receiving an RRC connection establishment response message from the
base station, transmit an RRC connection establishment complete
message to the base station and transmit a cell change request
message to the base station; when no cell change response message
is received from the base station within a preset time and it is
determined that the current number that the cell change request
message is transmitted is smaller than a preset maximum number of
transmissions, read the SIB7 periodically and obtain the uplink
interference value; and when determining, according to the uplink
interference value, to transmit the cell change request message to
the base station, transmit the cell change request message to the
base station again.
Optionally, the processor 51 is specifically configured to:
transmit a cell change establishment request message to the base
station; when no cell change response message is received from the
base station within a preset time and it is determined that the
current number of times the cell change request message is
transmitted is smaller than a preset maximum number of
transmissions, read the SIB7 periodically and obtain the uplink
interference value; and when determining, according to the uplink
interference value, to transmit the cell change request message to
the base station, transmit the cell change request message to the
base station again.
The foregoing descriptions are merely specific embodiments of the
present invention, but are not intended to limit the protection
scope of the present invention. Any variation or replacement
readily figured out by a person skilled in the art within the
technical scope disclosed in the present invention shall fall
within the protection scope of the present invention. Therefore,
the protection scope of the present invention shall be subject to
the protection scope of the claims.
* * * * *